Window-operating mechanism



T. F. LEE.

WINDOW OPERATING MECHANISM.

APPLICATION FILED MAY 14. 1918.

Patented Nov. 23, 1920.

gvwewtoz 2% C4412 so PATENT OFFICE.

THOMAS F. LEE, on NEW YORK, N. Y.

WINDOW-OPERATING- MECHANISM.

Specification of Letters Patent.

Patented Nov. 23, 1920.

Application filed May 14, 1918. Serial No. 234,473.

To all whom it may concern;

Be it known that I, THOMAS F. LEE, a cit zen of the United States, residing at New York, in the county of New York, State of New York, have invented certain new and useful Improvements in VVindow-Operating Mechanisms; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention is animprovement in windows and has particular reference to an operating mechanism therefor.

An object ofthe invention is to provide a simple, comparatively inexpensive and effective operating mechanism of improved construction designed to raise the upper and lower sashes to close and open the same, respectively, and lock them in such position.

The inventive idea involved is capable of receiving a variety of mechanical expressions one of which, for the purpose of illustrating the invention, is shown in the accompanying drawing wherein:

Figure 1 is a front elevation of a window and frame therefor showing the invention applied thereto.

Fig. 2 is a vertical sectional View through the window and frame.

Fig. 3 is an enlarged vertical view taken on the line 33 of Fig. 2.

Referring more particularly to the drawing in which like references indicate similar parts, the numeral 5 indicates a window frame of any desired construction in which is slidably mounted the upper and lower sashes 6 and 7 respectively.

The mechanism for raising the sashes 6 and 7 preferably comprises a pair of shafts 8 and 9 extending transversely across the top and embedded in the window frame 5 and the shaft 8 is connected at its ends to the upper rail of the lower sash 7 by means of the cords or other flexible elements 10 so that when said shaft is rotated in one direction, as will presently appear, the cords will be wound thereon and the lower slash raised. Similarly the shaft 9 is connected to the upper sash 6 by means of cords or other flexible elements 11 which are adapted to be wound upon the shaft when the same 1s rotated in one direction in order to adjust the upper sash to its closed position.

In order to rotate the shafts 8 and 9 in a direction to wind the cords 10 and 11 which the other motor is mounted. To control the motors 15 each has connected thereto the wires 16 leading downwardly to a switch 17 embedded in the casing 5 and it is to be understood that these switches may be of any desired construction. If it is desired to raise the lower sash, the switch 17 at the right of the window casing, as shown in the drawing, is adjusted to operate the motor to which it is connected and the shaft 8 will consequently be rotated to wind the cords l0 thereon until the sash is raised to the position desired whereupon the switch maybe again operated to stop the motor. In like manner the sash 6 may be raised to its closed position by the operation of the switch 17 on the left side of the casing 5.

In view of the fact that the shafts 14 of the motors are free to rotate it becomes necessary to provide means for preventing rotation of the shafts when the sashes 6 and 7 are in closed or raised positions, respectively. To this end, there is provided a locking device for each motor preferably consisting of a rod 18 mounted for vertical movement in the side of the casing 5 adjacent the motor with which it is associated and the upper end of said rod is provided with a tooth 19 adapted to be adjusted into engagement with the teeth of the gear 13 on the motor shaft 14 toprevent rotation thereof. That is, one of the rods 18 is provided in each side of the window casing so as to cooperate with the gearing of the motors of the shafts 8 and 9 respectively. The lower end of the rod 18 has pivoted thereto at 20 a handle 21 which normally projects from the casing 5 in order that the same may be grasped to adjust the rod 18 vertically to its operative position and in order to maintain the same in such position the free end of the handle 21 is provided with a projection 22 adapted to engage the bottom of a slot 23 formed in the casing 25 and this engagement is effected by swinging prevented until the handle 21 is again swung at an angle thereto at which time the rod will move downwardly and the upper end thereof disengaged from the gear 13. In connection with the upper sash, it will be obvious that the locking device must be in its operative or looking position when said sash is closed and in order to lower the same it will be necessary to adjust the locking device to its inoperative. position until the sash has been lowered the desired de gree, it being understood that the weight of said sash will unwind the cords 11 from the shaft 9. Vhen the lower sash is in its closed position the locking device is disengaged from the gear 13 of the motor which controls the movement of said sash and by operating the switch of said motor the shaft 8 may be rotated in the desired direction to raise the sash after which the locking device may be moved into engagement with the gear and downward movement of said sash prevented.

What is claimed is 1. In a window operating mechanism, the combination with a sliding sash, a motor operating said sash to closed and opened positions, respectively, gearing connecting said motor with said sash, a locking device associated with the motor for retaining the sash in an adjusted position, said device including a vertically adjustable rod having one end adapted for engagement with the gearing of the motor, and a handle pivoted to the other end of the rod and having a locking projection adapted to engage a portion of a window casing when the handle is swung about its pivot whereby to maintain the locking device in its operative position.

2. The combination with a motor operated shaft and gearing associated therewith; of a casing inclosing the shaft and gearing and a locking device associated with the motor for holding the same against rotation, said locking device comprising guides within the casing, a rod vertically adjustable therein and having an offset upper end formed with a flattened engaging tooth adapted for disposition between the teeth of a gear, said casing having a vertical slot therein and a handle pivoted to said rod adjacent to said slot and having a projection extending through the slot when said handle is in alinement with the rod to hold said rod against movement, said handle being adapted to be swung out of alinement with respect to the rod to permit disengagement of the latter. v

In testimony whereof I ailix my signature, in the presence of two Witnesses.

THOMAS F. LEE.

Witnesses 7 WM. E. CoNRAD, CLARENCE COHEN. 

